MODEL BMG-780 GRINDER
SECTION 3
GENERAL
19
OPERATING MANUAL
MARCH 2009
Grinding & Polishing
The upper part of the BMG 780 is where the drive system for the machine is
located. The rotational drive is powered through a speed reduction drive belt and
pulley system, which also gives rotation to the grinder head and drive to the center
pulley. Upper Belt (item #8) in Figure 3.4 is set using an electronic belt tension
meter at the factory and set somewhere between 200-215 Hz. The Housing Drive
belt located inside the Motor Housing (item #6) is also set using an electronic belt
tension meter at the factory and set somewhere between 160-170 Hz.
Fig. 3.4
1
Motor
5
Spider bearing
9
Tensioner upper belt
2
Coupling
6
Motor housing
10
Contra pulley
3
Flange motor seat
7
Center pulley
4
Motor seat
8
Upper belt
3.6 UPPER PART
Summary of Contents for BMG-780 ULTRAPRO
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